Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Douglass Mine, Blue Hill, Hancock Co., Maine, USA

Oldest recorded age at locality: 510
Youngest recorded age at locality: 510

mindat Locality ID: 105659
mindat URL: http://www.mindat.org/loc-105659.html

Tectonic Settings: Backarc Environment

Total number of sublocalities beneath "Douglass Mine, Blue Hill, Hancock Co., Maine, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Amphibole	Arsenopyrite	Chalcopyrite	Clay	Copper	Malachite	Mica	Molybdenite	Nickeline	None
Not in a structural group	Pyrite	Quartz	Rocksalt	Sphalerite	Spinel

Actinolite ()*	Arsenopyrite ()*	Azurite ()*	Chalcocite ()*	Chalcopyrite ()*
Copper ()*	Cuprite ()*	Galena ()*	Magnetite ()*	Malachite ()*
Molybdenite ()*	Muscovite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*
Sphalerite ()*	Tremolite ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al As C Ca Cu Fe H K Mg Mo O Pb S Si Zn

Elements from minerals reported directly at this locality: Al As C Ca Cu Fe H K Mg Mo O Pb S Si Zn

Structural Groups for minerals in this locality:
Amphibole Arsenopyrite Chalcopyrite Clay Copper Malachite Mica Molybdenite Nickeline None
Not in a structural group Pyrite Quartz Rocksalt Sphalerite Spinel

17 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	510	510	3419
Arsenopyrite ()*	Arsenopyrite	FeAsS	510	510	9052
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂	510	510	5509
Chalcocite ()*	None	Cu₂S	510	510	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	510	510	27198
Copper ()*	Copper	Cu	510	510	3846
Cuprite ()*	Not in a structural group	Cu₂O	510	510	2970
Galena ()*	Rocksalt	PbS	510	510	24243
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	510	510	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	510	510	12537
Molybdenite ()*	Molybdenite	MoS₂	510	510	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	510	510	17380
Pyrite ()*	Pyrite	FeS₂	510	510	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	510	510	9056
Quartz ()*	Quartz	SiO₂	510	510	61156
Sphalerite ()*	Sphalerite	ZnS	510	510	21482
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	510	510	2562

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	vms-01057	510	510	Ordovician to Precambrian										S	105659	Douglass Mine, Blue Hill, Hancock Co., Maine, USA	Douglas	Moiser et al. (2009)		USGSOFR2009_1034

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...